Optical image capturing system

Abstract

The invention discloses a five-piece optical lens for capturing image and a five-piece optical module for capturing image. In order from an object side to an image side, the optical lens along the optical axis comprises a first lens with refractive power; a second lens with refractive power; a third lens with refractive power; a fourth lens with refractive power; a fifth lens with refractive power; and at least one of the image-side surface and object-side surface of each of the five lens elements is aspheric. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.

What is claimed is: 
     
       1. An optical image capturing system, in order along an optical axis from an object side to an image side, comprising:
 a first lens having refractive power; 
 a second lens having refractive power; 
 a third lens having refractive power; 
 a fourth lens having refractive power; 
 a fifth lens having refractive power; 
 a first image plane, which is an image plane specifically for visible light and located at a position of the optical axis with a through-focus modulation transfer rate (value of MTF) at a first spatial frequency having a maximum value; and 
 a second image plane, which is an image plane specifically for infrared light and located at a position of the optical axis with the through-focus modulation transfer rate (value of MTF) at the first spatial frequency having a maximum value; 
 wherein the optical image capturing system consists of the five lenses with refractive power; at least one lens among the first to the fifth lenses is made of plastic; at least one lens among the first to the fifth lenses has positive refractive power; each lens among the first lens to the fifth lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side; 
 wherein the optical image capturing system satisfies: 
 1.0≤f/HEP≤10.0; 
 0 deg<HAF≤40 deg; 
 0.2≤SETP/STP<1; and 
 |FS|≤12 μm; 
 where f1, f2 f3, f4, and f5 are focal lengths of the first lens to the fifth lens, respectively; f is a focal length of the optical image capturing system; HEP is an entrance pupil diameter of the optical image capturing system; HOI is a maximum height for image formation on the first image plane; HOS is a distance between the object-side surface of the first lens and the first image plane on the optical axis; InTL is a distance from the object-side surface of the first lens to the image-side surface of the fifth lens on the optical axis; HAF is a half of a maximum view angle of the optical image capturing system; FS is a distance on the optical axis between the first image plane and the second image plane; ETP1, ETP2, ETP3, ETP4, and ETP5 are respectively a thickness at the height of ½ HEP of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens; SETP is a sum of the aforementioned ETP1 to ETP5; TP1, TP2, TP3, TP4, and TP5 are respectively a thickness of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens on the optical axis; STP is a sum of the aforementioned TP1 to TP5. 
 
     
     
       2. The optical image capturing system of  claim 1 , wherein a wavelength of the infrared light ranges from 700 nm to 1300 nm, and the first spatial frequency is denoted by SP1, which satisfies the following condition: SP1≤440 cycles/mm. 
     
     
       3. The optical image capturing system of  claim 1 , wherein the optical image capturing system further satisfies:
 IN45>IN23; 
 where IN23 is a distance on the optical axis between the second lens and the third lens, and IN45 is a distance on the optical axis between the fourth lens and the fifth lens. 
 
     
     
       4. The optical image capturing system of  claim 1 , wherein the optical image capturing system further satisfies:
 IN45>IN34; 
 where IN34 is a distance on the optical axis between the third lens and the fourth lens, and IN45 is the distance on the optical axis between the fourth lens and the fifth lens. 
 
     
     
       5. The optical image capturing system of  claim 1 , wherein the optical image capturing system further satisfies:
 0<HOS/HOI≤5. 
 
     
     
       6. The optical image capturing system of  claim 1 , wherein the optical image capturing system further satisfies:
 0.2≤EIN/ETL<1; 
 where ETL is a horizontal distance in parallel with the optical axis between a coordinate point at a height of ½ HEP on the object-side surface of the first lens and the first image plane; EIN is a horizontal distance in parallel with the optical axis between the coordinate point at the height of ½ HEP on the object-side surface of the first lens and a coordinate point at a height of ½ HEP on the image-side surface of the fifth lens. 
 
     
     
       7. The optical image capturing system of  claim 1 , wherein the optical image capturing system further satisfies:
 0.2≤SETP/EIN<1; 
 where EIN is the horizontal distance in parallel with the optical axis between the coordinate point at the height of ½ HEP on the object-side surface of the first lens and the coordinate point at the height of ½ HEP on the image-side surface of the fifth lens. 
 
     
     
       8. The optical image capturing system of  claim 1 , wherein the optical image capturing system further satisfies:
 0.1≤EBL/BL≤1.1; 
 where EBL is a horizontal distance in parallel with the optical axis between a coordinate point at the height of ½ HEP on the image-side surface of the fifth lens and the first image plane; BL is a horizontal distance in parallel with the optical axis between the point on the image-side surface of the fifth lens where the optical axis passes through and the first image plane. 
 
     
     
       9. The optical image capturing system of  claim 1 , further comprising an aperture, wherein the optical image capturing system further satisfies:
 0.2≤InS/HOS≤1.1; 
 where InS is a distance between the aperture and the first image plane on the optical axis.